Patents by Inventor Hoa D. Nguyen
Hoa D. Nguyen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10709462Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.Type: GrantFiled: November 17, 2017Date of Patent: July 14, 2020Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Hoa D. Nguyen, Khanh Vo
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Patent number: 10646240Abstract: Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.Type: GrantFiled: October 4, 2017Date of Patent: May 12, 2020Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Rainier Betelia, Hoa D. Nguyen, Camilo Perez Saaibi, Adam R. Tanner
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Publication number: 20200085458Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.Type: ApplicationFiled: November 21, 2019Publication date: March 19, 2020Inventors: Hoa D. NGUYEN, John M. ADAMS
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Patent number: 10555744Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.Type: GrantFiled: November 8, 2016Date of Patent: February 11, 2020Assignee: Shockware Medical, Inc.Inventors: Hoa D. Nguyen, John M. Adams
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Publication number: 20190388110Abstract: The invention provides a system for treating an occlusion within a body lumen. The system may comprise an insulated outer sheath; an elongated conductive tube, wherein the insulated outer sheath is circumferentially mounted around the elongated conductive tube; and an insulated wire having a helically coiled portion at a distal end of the insulated wire. The coiled portion includes an exposed distal tip, and a distal portion of the elongated conductive tube is circumferentially mounted around the distal coiled portion of the insulated wire. When a voltage is applied across the insulated wire and the elongated conductive tube, a current is configured to flow from the exposed distal tip of the insulated wire to the elongated conductive tube to generate a plurality of cavitation bubbles. In an alternate embodiment, an elongated central electrode is used in place of the conductive tube.Type: ApplicationFiled: June 10, 2019Publication date: December 26, 2019Applicant: Shockwave Medical, Inc.Inventors: Hoa D. NGUYEN, Camilo Perez SAAIBI
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Publication number: 20190150960Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.Type: ApplicationFiled: November 17, 2017Publication date: May 23, 2019Applicant: SHOCKWAVE MEDICAL, INC.Inventors: Hoa D. Nguyen, Khanh Vo
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Publication number: 20180360482Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.Type: ApplicationFiled: May 24, 2018Publication date: December 20, 2018Applicant: Shockwave Medical, Inc.Inventor: Hoa D. NGUYEN
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Publication number: 20180098779Abstract: Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.Type: ApplicationFiled: October 4, 2017Publication date: April 12, 2018Applicant: SHOCKWAVE MEDICAL, INC.Inventors: Rainier BETELIA, Hoa D. NGUYEN, Camilo Perez SAAIBI
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Publication number: 20180005183Abstract: A smart and secured system to receive packages from online shopping; automatically download list of incoming packages from one or multiple linked online-shopping accounts; provide navigational support to postal carriers and/or autonomous delivery; print receipts for validation; send encrypted confirmation to home-owners when any packages arrives; and implement an a. The system compromises of a secure box with a magnetic lock to store packages; a control circuitry, mini thermal printer and embedded processor to recognize and validate the arrived packages; a radio-frequency transceiver to wirelessly communicate with other electronic devices to notice information of the packages; and global positioning system (GPS) tracking tags for anti-theft protection.Type: ApplicationFiled: June 29, 2016Publication date: January 4, 2018Inventors: Cuong Manh Nguyen, Hoa D. Nguyen, Phuong Thi Xuan Pham, Hoang Dat Kieu
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Patent number: 9855536Abstract: Apparatus and methods for generating foam are disclosed. The inventions can be used for generating foam for sclerotherapy. A foaming element can be agitated within a foaming chamber by a drive unit that does not touch the foaming element, but actuates it from outside the foaming chamber. The foaming element and drive unit can be magnetically coupled. A syringe can be used to form a foaming chamber.Type: GrantFiled: May 10, 2013Date of Patent: January 2, 2018Assignee: Covidien LPInventors: Hoa D. Nguyen, Michael S. Mirizzi
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Publication number: 20170135709Abstract: Disclosed herein shock wave catheters comprising one or more shock wave electrodes for cracking calcifications located within blood vessels. In some variations, a shock wave catheter has first and second shock wave electrodes each circumferentially disposed over the outer surface of the catheter. In certain variations, the first electrode has a recess and the second electrode has a protrusion that is received by the recess and a spark gap is located along the separation between the recess and the protrusion. The second electrode can also have a recess that receives a protrusion from a third shock wave electrode, where the separation between the second and third electrodes along the separation between the recess and the protrusion forms a second spark gap. A shock wave can be initiated across these spark gaps when a voltage is applied over the electrodes.Type: ApplicationFiled: November 8, 2016Publication date: May 18, 2017Inventors: Hoa D. NGUYEN, John M. ADAMS
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Patent number: 9616246Abstract: A method of performing therapy on tissue using a medical apparatus. The apparatus includes a shaft configured for insertion into a hollow anatomical structure (HAS) and has a tissue sensor and a therapeutic energy application device both located on the shaft. The method comprises: receiving electrical power at a first power level and directing the first-level power to the tissue sensor and not to the therapeutic energy application device, thereby enabling tissue sensing with the tissue sensor; receiving electrical power at a second power level higher than the first-level power; and, in response to receipt of the second-level power, directing the second-level power to the therapeutic energy application device, thereby enabling performance of therapy on the tissue with the therapeutic energy application device. Additional methods and apparatus are disclosed as well.Type: GrantFiled: August 20, 2010Date of Patent: April 11, 2017Assignee: Covidien LPInventors: Hoa D. Nguyen, Arthur W. Zikorus, Stephen W. Lee
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Patent number: 9547123Abstract: An apparatus for treating a hollow anatomical structure can include a light delivery device. The light delivery device comprises an optical fiber that is located in a lumen of a shaft suitable for insertion into the hollow anatomical structure and has a fiber tip located proximal of a distal end of the shaft during treatment of the hollow anatomical structure. The apparatus can further include a liquid source for providing a liquid flow over the optical fiber at a predetermined liquid flow rate.Type: GrantFiled: April 15, 2013Date of Patent: January 17, 2017Assignee: Covidien LPInventors: Walter J. Stevens, Stephen W. Lee, Michael S. Mirizzi, Hoa D. Nguyen
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Publication number: 20160231103Abstract: A laser frame tracer (12) including a laser measuring unit (20) with a laser (36) and one or more cameras (38, 40) for optically measuring dimensions of eyeglass frames (10). A frame carrier (22) is provided for moving the eyeglass frames (10) through a laser line emitted by the laser (36). The frame carrier (22) includes a linear carriage (44) and a rotary carriage (88). Movement of the linear carriage (44) and the rotary carriage (88) are controlled by an on-board computer (116) which collects image data from the one or more cameras (38, 40). Image data is processed to determine a 3D model from which selected dimensions for the eyeglass frames (10) may be measured. The dimensions may be stored in a cloud database for access by others in cutting lenses to fit the eyeglass frames (10).Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Inventors: William Todd Hofmeister, Hoa D. Nguyen
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Patent number: 9316489Abstract: A laser frame tracer (12) including a laser measuring unit (20) with a laser (36) and one or more cameras (38, 40) for optically measuring dimensions of eyeglass frames (10). A frame carrier (22) is provided for moving the eyeglass frames (10) through a laser line emitted by the laser (36). The frame carrier (22) includes a linear carriage (44) and a rotary carriage (88). Movement of the linear carriage (44) and the rotary carriage (88) are controlled by an on-board computer (116) which collects image data from the one or more cameras (38, 40). Image data is processed to determine a 3D model from which selected dimensions for the eyeglass frames (10) may be measured. The dimensions may be stored in a cloud database for access by others in cutting lenses to fit the eyeglass frames (10).Type: GrantFiled: September 4, 2013Date of Patent: April 19, 2016Assignee: Pro Fit Optix Inc.Inventors: William Todd Hofmeister, Hoa D Nguyen
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Patent number: 9254144Abstract: In certain embodiments, the system is configured to remove from or fragment materials in a vessel by inserting a catheter into a vessel, wherein the distal tip of the catheter is placed at the surgical site and a liquid spray is applied to materials to remove or fragment (as defined herein) the materials. In certain embodiments, the system comprises a liquid spray emanating from a fragmentation lumen and across a fragmentation opening.Type: GrantFiled: December 14, 2007Date of Patent: February 9, 2016Assignee: Covidien LPInventors: Hoa D. Nguyen, Michael S. Mirizzi
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Patent number: 9125657Abstract: One embodiment of the apparatus comprises a housing with a sheath portion projecting distally therefrom. The sheath portion has a sheath with a lumen, and a bearing surface in the sheath lumen or aligned with the sheath lumen, and located at or near a distal end of the sheath. The implant is at least partially positioned in the apparatus, and comprises an implant body and a tether connected to the implant body. The tether extends from the implant body distally within the sheath portion and around the bearing surface, where the tether changes direction, and extends back proximally from the bearing surface along and within the sheath portion. The apparatus is configured to move the first tether portion proximally and thereby draw the implant body distally along and within the sheath lumen.Type: GrantFiled: June 21, 2011Date of Patent: September 8, 2015Assignee: Covidien LPInventors: Miranda M. Ray, Hoa D. Nguyen, John W. Rodriguez
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Patent number: 9060773Abstract: The various embodiments simplify the delivery of an occlusive implant to a hollow anatomical structure, such as a fallopian tube. For example, the delivery devices don't need to be retracted manually to deploy the implant. When the devices are activated, stored energy or a powered drive member induces movement of the various components. The operator need only position the distal ends of the devices at the treatment site and then commence deployment by, for example, flipping a switch or changing the position of an activation button. The present embodiments thus increase the efficacy of occlusion procedures by reducing the likelihood of operator error.Type: GrantFiled: December 16, 2011Date of Patent: June 23, 2015Assignee: Covidien LPInventors: Hoa D. Nguyen, Michael S. Mirizzi, Thomas C. Pham
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Patent number: 8936631Abstract: A method of performing therapy on tissue using a medical apparatus. The apparatus includes a shaft configured for insertion into a hollow anatomical structure (HAS) and has a tissue sensor and a therapeutic energy application device both located on the shaft. The method comprises: receiving electrical power at a first power level and directing the first-level power to the tissue sensor and not to the therapeutic energy application device, thereby enabling tissue sensing with the tissue sensor; receiving electrical power at a second power level higher than the first-level power; and, in response to receipt of the second-level power, directing the second-level power to the therapeutic energy application device, thereby enabling performance of therapy on the tissue with the therapeutic energy application device. Additional methods and apparatus are disclosed as well.Type: GrantFiled: August 20, 2010Date of Patent: January 20, 2015Assignee: Covidien LPInventors: Hoa D. Nguyen, Arthur W. Zikorus, Stephen W. Lee
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Publication number: 20140240460Abstract: A laser frame tracer (12) including a laser measuring unit (20) with a laser (36) and one or more cameras (38, 40) for optically measuring dimensions of eyeglass frames (10). A frame carrier (22) is provided for moving the eyeglass frames (10) through a laser line emitted by the laser (36). The frame carrier (22) includes a linear carriage (44) and a rotary carriage (88). Movement of the linear carriage (44) and the rotary carriage (88) are controlled by an on-board computer (116) which collects image data from the one or more cameras (38, 40). Image data is processed to determine a 3D model from which selected dimensions for the eyeglass frames (10) may be measured. The dimensions may be stored in a cloud database for access by others in cutting lenses to fit the eyeglass frames (10).Type: ApplicationFiled: September 4, 2013Publication date: August 28, 2014Applicant: Pro Fit Optix IncInventors: William Todd Hofmeister, Hoa D. Nguyen